11 optical illusions that will play tricks on your eyes — and what they say about how you see the world

Playbuzz/Samantha Jones

• A contributor on the storytelling platform Playbuzz put together a quiz about optical illusions.
• Each photo contains two possible images — one "big picture" and one that is less obvious to spot.
• Depending on which you see first, you might have "initial perception" or "deep perception."

Images that appear to show two things at once are a classic genre of optical illusions. The brain's figure-ground organization decides what part of an image is the main figure and what part is the background, but optical illusions like Rubin's vase can make it hard to tell. Do you see two people facing each other, or a vase?

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